188887228870 has 16 divisors (see below), whose sum is σ = 347230991808. Its totient is φ = 73947340480.

The previous prime is 188887228867. The next prime is 188887228931. The reversal of 188887228870 is 78822788881.

It is a super-2 number, since 2×188887228870² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 188887228796 and 188887228805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200943391 + ... + 200944330.

It is an arithmetic number, because the mean of its divisors is an integer number (21701936988).

Almost surely, 2^188887228870 is an apocalyptic number.

188887228870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188887228870 is a deficient number, since it is larger than the sum of its proper divisors (158343762938).

188887228870 is a wasteful number, since it uses less digits than its factorization.

188887228870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401887775.

The product of its (nonzero) digits is 51380224, while the sum is 67.

The spelling of 188887228870 in words is "one hundred eighty-eight billion, eight hundred eighty-seven million, two hundred twenty-eight thousand, eight hundred seventy".